How does training in mindfulness meditation effect the brain structure and cognition?

INTERVENTION: 1. We studied normal subjects with no prior meditation, or related training undergoing intensive meditation training based on a set of breathing exercises and mindfulness techniques 2. We included 60 university students of which 30 randomly chosen subjects will practice daily 20 minutes for 6 weeks 3. The other 30 subjects (will be the waitlist for meditation training) will act as a control group to check for i.e. training effects in the cognitive tests by being a reading group with same frequency of training and focusing on the narrative content only CONDITION: Meditation practice ; Not Applicable PRIMARY OUTCOME: Pre‐frontal (IFG) and insular cortex density measured by MRI at baseline and 6 weeks; SECONDARY OUTCOME: Measured at baseline and 6 weeks:; 1. Default‐mode network connectivity; 2. Stop accuracy and error awareness; 3. Emotional stroop INCLUSION CRITERIA: 1. Either sex, aged 18‐40 years, ethnic Danes 2. Right handed 3. Health subjects with no history of neurological disorders, psychological and/or psychiatric, cardiovascular or respiratory diseases, brain injury, cancer, addiction to drugs/alcohol, severe impediment to limb movement, hearing and vision 4. Normal MRI brain scan